But he’s not slowing down yet. “This year has been the most exciting year I’ve worked at the White House to date,” he said, and has been “very energizing.”

“You feel the ticking clock,” he added.

Pfeiffer said he’s thought about writing a book when he finally does leave, but isn’t sure whether he will.

”I don’t know who would want to read that book but I think it would be an interesting thing to do,” he said.

And he offered a bit of a pitch.

“I have some perspective that only a small handful of people have because there’s only a few select group of the overly stubborn and tired who have done the whole thing without a break,” he said. “There’s historical benefit for here’s one person’s view about this decision was made and that decision was made and that’s interesting.”